Hazard lights may be used while driving for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing.

Hazard light use is not permitted while driving except for emergency vehicles, stopped or slowed vehicles to indicate a traffic hazard, when traveling as part of a funeral procession, or traveling slower than 30 mph.

Hazard lights may be used when a motor vehicle is coming to a stop or standing on a highway or traveling at a speed less than 40 kph when it is necessary to do so for safe operation; and when the vehicle is again put in motion or resumes a speed up to 40 kph.

Hazard lights are required to be activated when a driver parks a vehicle on a roadway during the period from 1/2 hour after sunset to 1/2 hour before sunrise or at any other time when conditions of poor visibility exist; or when the vehicle is travelling at less than 40 km/h due to vehicle impairment.

Hazard lights may not be used unless a vehicle is coming to a stop or is standing on a highway, it is necessary to do so for the safe operation of the vehicle, or the vehicle presents a hazard to other vehicles on the highway.